#646BE4#646BE4

#646BE4 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.6% C 0.180 H 276.8°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#646BE4
RGB	rgb(100, 107, 228)
HSL	hsl(237, 70%, 64%)
HSV	hsv(237, 56%, 89%)
CMYK	cmyk(56.1%, 53.1%, 0%, 10.6%)
CIE-LAB	lab(50.48, 31.71, -62.57)
CIE-LCH	lch(50.48, 70.15, 296.87°)
OKLab	oklab(58.56% 0.0213 -0.1791)
OKLCH	oklch(58.56% 0.18 276.8)
XYZ	xyz(24.5123, 18.8244, 75.7255)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BE4 #E4DD64

analogous

#64ABE4 #646BE4 #9D64E4

triadic

#646BE4 #E4646B #6BE464

tetradic

#646BE4 #E464AB #E4DD64 #64E49D

square

#646BE4 #E464AB #E4DD64 #64E49D

split-complementary

#646BE4 #E49D64 #ABE464

monochromatic

#1F26AF #3039DB #646BE4 #989DED #CCCFF6

Accessibility & contrast

On white

4.41

#646BE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#646BE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BE4

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BE4	#FFFFFF	#000000	##000000
##646BE4	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#217EE8

Deuteranopia (green-blind)

#0073E1

Tritanopia (blue-blind)

#19879D

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646be4;
/* rgb */ color: rgb(100, 107, 228);
/* oklch */ color: oklch(58.6% 0.180 276.8);

Tailwind

colors: {
  custom: {
    50: '#9a95ed',
    500: '#646be4',
    950: '#000000',
  },
}

SCSS

$custom: #646be4;
$custom-light: #9a95ed;
$custom-dark: #000000;

JSON

{
  "hex": "#646be4",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 228
  },
  "hsl": {
    "h": 236.719,
    "s": 70.33,
    "l": 64.314
  },
  "oklch": {
    "l": 0.58559,
    "c": 0.1804,
    "h": 276.8
  },
  "luminance": 0.18826
}

Semantic roles & 50–950 ramp

primary

#646BE4

secondary

#E8E6BC

accent

#C813D2

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #646BE4

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →